Sensor Networks Hierarchical Optimization Model for Security Monitoring in High-Speed Railway Transport Hub

Table 1

Data acquisition demands of security monitoring in HRTH.

Level	Description	Concern	Data acquisition demands
First level	Key area monitoring	Focus on the security of key, important, and sensitive areas	The data of key areas in HRTH must be continuously acquired and can meet the anomaly detection of key areas
Second level	Passenger line monitoring	Focus on the security of passenger input and output lines	The data of entire passenger line in HRTH must be continuously acquired and can meet the forecast demands of post node in passenger line
Third level	Complete coverage monitoring	Focus on the security of whole HRTH	The data of whole HRTH can be inconsecutively and optionally acquired and must ensure all function areas are completely covered